Air-moistening system.



" PATENTED JUNE 7, 1904 A. GLARKSON. AIR MOISTENING SYSTEM.

APPLIOAT IOH FILED MAY 1, 1903 NOIMODEL.

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. UNITED STATES Patented June '7, 1904.

PATENT OFFICE.

AIR-MOISTENING SYSTEM.

SPECIFICATION forming part of Letters Patent No. 762,143, dated June 7, 1904.

Application filed May 1, 1903. Serial No. 155,224. (No model.)

To all whom, it may concern:

Be it known that I, ALFRED GLAnKsoN, a citizen of the United States, residing at Fall River, in the county of Bristol and State of Massachusetts, have invented certain new'and useful Improvements in Air-Moistening Systems, of which the following is a specification, reference being had therein to the accompanying drawings.

Figure 1 is an elevation, with some parts in vertical central section, illustrating my invention. Fig. 2 is a vertical central section, enlarged, of the compressed-air receiver and water-heater. Fig. 3 is a sectional plan view at a line corresponding to line 3 3 of Fig. 2 looking down. Figs. 4, 5, and 6 show the three-way regulating-cock in different positions. Fig. 7 is an enlarged view showing the tapered threaded joints of pipes with a part of the heater-head.

It is of recognized importance in many branches of business to preheat the water admitted to humidifiers of the class wherein both water and air are used. v Such preheating has always been done heretofore by use of steamheating apparatus of one form or another.

The main object of my invention isto effect this preheating of the water by utilization of the heat of the compressed air in the air-receiver which forms a part of the humidifyingapparatus of the class wherein water and air are used.

Other features of my invention are pointed out below. 7

In the drawings, 1' is an air-compressor of any suitable construction; 2, its air inlet through which air, preferably from outside the building, is taken into the compressor. 3 is the compressor-deliveryconduit to compressed-air receiver 4:, of any desired shape, and which is preferably provided with a suitable safety-valve 40. Conduit 3 extends within the receiver well toward the bottom there= of and is open at itsend within the receiver. Receiver 4 is provided interiorly with an inwardly-extending heater 5, preferably in the form of a tube closed at its inner end, as shown. This tube is best made of copper.

Heater 5 is provided with a heater-head 6, attached to the outer wall of the receiver, head 6 having a water-pipe 7 extending from it into heater 5. Pipe 7 is open at its inner end and has an exterior diameter smaller than the interior diameter of heater 5, so as to form a hot-water space 8 between it and the inner wall of the heater. Water is admitted to pipe 7, through the water-supply conduit 9, from any suitable source for example, through filters 10- from' a street water-pipe. Conduit 9 enters heater-head 6 in line with the pipe 7, so that water flows into heater 5, wherein it is raised in temperature by the heat of the compressed air in the air-receiver. The warmed water fiows out through chamber 11 in the heater-head, this chambercommunicating with the warm-water space 8 and with the outlet-conduit 12, which preferably discharges into a water-tank 13 and is provided at its outlet end with a ball-cock 14:. From tank 13 the warm water flows, preferably, through a filter 15 into the water-supply pipe 16 of the atomizers or humidifiers 17, which may be of any desired construction. Air is supplied to the atomizers or humidifiers through the air-supply pipe 18, which leads from the airhead 19 of the compressed-air reservoir This air-head is a chambered shell and has a removable plug 20 in its wall to fill an opening which is in line with an opening that opens intothe air-receiver and which is pro vided with a strainer 21, which is small enough to be withdrawn from the apparatus through the plug-filled opening when the plug is removed. Preferably strainer 21 is tubular, of a diameter smaller than that of the plug-filled opening, and provided at its upper end with a handle 22, by means of which the strainer can be readily removed for cleansing. The foregoing parts and their mode of assemblage may be varied, if desired, without departure from the main features of my invention; but as the heater-head and air-head are both novel I will now describe them in detail, it being understood that these areminor features of my invention and that they are not essential parts of my invention, broadly considered. As a matter of practical convenience the heater-head and air-head are commonly mounted on the upper end of the airreceive'r, which is best cylindrical in trans verse section. Consequently I make the lower end of the heater-head with threads and screw it into the threaded boss 41 of the air-receiver and screw the upper end of heater 5 into the open lower end of the heater-head at 43. It is also desirable in order to secure permanently tight joints where the warm-water pipes enter and leave the heater-head to use two pipes (as 7 and 9) instead of one continuous pipe, which would involve the use of lock-nuts, &c. AccordinglyI form the heaterhead with a reentrant tubular portion 44, which has an upwardly-tapering threaded portion 23 to receive the tapering threaded end 24 of pipe 7. This taper of the threaded part 23 diminishes as it extends inwardly of the tubular portion 44, the outer portion of which has an outwardly-enlarging tapered and threaded portion for reception of the tapered and threaded end 25 of pipe 9. By this construction I obtain very strong and durable joints. MO16VG!, i'/l16 pipe 7 is in practice assembled with the heater-head in the shop where the heater-head and air-reservoir are made, while the pipe 9 is commonly a part of the piping installed by plumbers or the like in the mills where the apparatus is-placed. Air-head 19 is provided with a bottom flange 26, which is bolted at 27 to a perforated boss 28 on the air-receiver. As above indicated, this air-head has a pipe-receiving opening and also two other openings in line one with the other. The upper of these two openings is filled by the removable plug 20 and is of greater diameter than the lower of the two openings which receives the strainer 21. Of course usual shut off or regulating valves will be supplied when desirable, as at 30 30, on each side of the filters 10; but in practice, in addition to such usual valves, I preferably provide means for regulating the supply of the water which is to be first warmed and afterward supplied to the humidifiers. This is important, because it is frequently desirable to increase or decrease the temperature of the water to the humidifiers, and' by admitting more or less cold water into the water warmed the temperature of the latter may be readily modified. One efiicient means of'accomplishing this object is to locate a three-way cook in the cold-watersupply pipe 9, so that the cold water on its way to the heater passes this cock. A conduit 51 leads from casing 52 of the cock to the warmwater pipe 12. When cock 50 is in one position, all its ways are open, one to the incoming portion and another to the outgoing portion of pipe 9 and the third to the conduit 51, through which cold water is fed into the warm Water flowing through pipe 12 to tank 13.

By regulating cock 50 a greater or lesser amount of cold water may be thus admitted to the warm water and the temperature thereof regulated before its ultimate admission into the humidifiers.

The foregoing position of the cock 50 is shown in Fig. 4.

In Fig. 5 the cock is shown in a position which closes conduit 51 and compels all the cold water to pass through the heater.

In Fig. 6 the cock is shown in position which prevents admission of cold water tothe heater, the whole of the cold water passing directly into pipe 12. If for any reason (which will usually depend on climatic or hygrometric conditions) it is not desired to preheat the water for admission to the humidifiers, then the heater may be shut off, as shown in Fig. 6, and then only cold water-that is, water from the filters 10 10will be supplied to the humidifiers.

The main advantages of my invention are the saving of the present cost of heating the water by steam, economy of parts, compactness, and economy of labor and material in installing.

What I claim is 1. The combination of an air-reservoir with an air-exit head having three openings; a filter in one, and a plug in the second, permitting access to the filter, and the third carry ing an exit-pipe.

2. The combination of a compressed-air receiver with a water-heater which is within the receiver and which has a water-outlet and is otherwise closed; and a water-supply pipe within and opening into the heater near the bottom thereof.

3. The combination of an air-receiver; a water-reservoir within the receiver; a watersupply pipe opening into the heater; a heaterhead fast on the receiver and having a wateroutlet, and also a water-inlet which communicates with said water-supply pipe; and an air-head mounted on the receiver and having a pipe-opening; a plug-opening; and an opening into the receiver.

4. As a new article of manufacture, the head 6 having an outlet-opening; a heater-receiving opening; and a tubular, inward projection which is interiorly threaded at each end, the threaded portions enlargingly tapering from within, outwardly.

In testimony whereof I affix my signature in presence of two witnesses.

ALFRED CLARKSON.

Witnesses:

W. E. (JovENEY, E. A. ALLEN.

ICC

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